Her stylist, Mariel Haenn, tells PEOPLE that Lopez's custom Zuhair Murad gown featured special built-in cups that prevented any "slips" when she took the stage at the Hollywood and Highland Center with Cameron Diaz to honor the best in costume design and makeup.

"The dress fit perfectly to every inch," she tells PEOPLE in a statement. "While the dress did give the illusion of sheer-ness, joke's on everyone who wishes they saw something!"